CIOK-FM
| Broadcast area | Saint John |
|---|---|
| Frequency | 100.5 MHz |
| Branding | K100 |
| Programming | |
| Format | Adult contemporary |
| Ownership | |
| Owner | Maritime Broadcasting System |
| CFBC, CJYC-FM | |
| History | |
First air date | 1987 |
Call sign meaning | CIO K100 (branding) |
| Technical information | |
| Class | C |
| ERP | 100,000 watts |
| HAAT | 381.5 meters (1,252 ft) |
| Links | |
| Webcast | Listen Live |
| Website | k100.ca |
CIOK-FM (100.5 MHz) is a Canadian radio station in Saint John, New Brunswick, owned by the Maritime Broadcasting System. The station currently offers an adult contemporary format branded on-air as K100. Prior to July 2009, it had an adult contemporary format before changing to CHR/Top 40. As of September 2015, the station moved back to AC.